NTE4901 Surge Clamping, Overvoltage Transient Suppressor, Bidirectional Description: The NTE4901 is a bidirectional transient voltage suppressor diode in an axial lead type package designed for protecting intergrated circuits, MOS, hybrids and other voltage−sensitive semiconductors and components. Features: D High Surge Capability D Very Fast Clamping Time Absolute Maximum Ratings: Peak Pulse Power (1ms Exponential Pulse, Initial TJ = +25°C, Note 1), PP . . . . . . . . . . . . . . . 1.5kW Power Dissipation (TA = +75°C, On Infinite heatsink), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5W Non−Repetitive Surge Peak Forward Current (Initial TJ = +25°C, t = 10ms), IFSM . . . . . . . . . . 250A Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +175°C Storage temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65° to +175°C Lead Temperature (During Soldering, 4mm from case, 10sec max.), TL . . . . . . . . . . . . . . . . +230°C Thermal Resistance, Junction−to−Case (On Infinite Heatsink), RthJ−C . . . . . . . . . . . . . . . . . 20°C/W Note 1. For surges higher than the maximum value, the diode will present a short−circuit anode− cathode. Electrical Characteristics: (Note 2, Note 3) Parameter Stand−Off Voltage Breakdown Voltage Clamping Voltage Peak Pulse Current Symbol Test Conditions VRM IRM = 300µA V(BR) IR = 1mA, Note 4 V(CL) 1ms expo IPP = 1A Max IPP = 10A Max IPP 1ms expo 8−20µs expo Temperature Coefficient of V(BR) Capacitance C VR = 0, f = 1MHz Min − 6 − − − − − − Typ Max Unit − 5 V − − V − 7.1 V − 7.5 V − 160 A − 1340 A −4 − 5.7 10 /°C 11000 − pF Note 2. The NTE4901 is bidirectional device; electrical characteristics apply in both directions. Note 3. Clamping time (0V o V(BR)): tclamping < 5ns. Note 4. Pulse Test: Pulse Width ≤ 50ms, Duty Cycle < 2%. 1.100 (27.94) Min .042 (1.07) Dia Max .375 (9.52) Max .205 (5.21) Dia Max